CVE-2025-30394Network attack vector

Service interruption via null-pointer dereference

Published May 13, 2025 · Updated Feb 13, 2026

Denial of service in Microsoft Windows Server Remote Desktop Gateway allows remote attackers to interrupt gateway service over a network. The RD Gateway service dereferences a null pointer while processing attacker-controlled network input, terminating service availability. Authentication and user interaction are not required, and successful exploitation makes remote desktop hosts behind the gateway unavailable.

CVSS severity5.9
Medium
EPSS probability30.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Windows Server Remote Desktop Gateway allows remote attackers to interrupt gateway service over a network. The RD Gateway service dereferences a null pointer while processing attacker-controlled network input, terminating service availability. Authentication and user interaction are not required, and successful exploitation makes remote desktop hosts behind the gateway unavailable.

The record

CVE
CVE-2025-30394
Published
May 13, 2025
Updated
Feb 13, 2026
Vendor
Microsoft
Product
Windows Server 2019
Classifications
CWE-591, CWE-362, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.17763.0 <10.0.17763.7314

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.7314
Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.4061
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.8066
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.25475
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.25475
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1611
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.8066
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22577
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.7314
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.3692
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.4061
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22577

Published CVSS scores

5.9Microsoft CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
8.6Trend Micro Zero Day InitiativeCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-591Sensitive Data Storage in Improperly Locked Memory
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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